BT 4.Rút gọn các biểu thức sau a)(x+3)(x^2-3x+9) b)(4x^2+2xy+y^2)(2x-y)-(2x+y)(4x^2-2xy+y^2)

vấn đề cạnh tranh thương hiệu trong xuất khẩu cafe việt nam ra thị trường thế giới

Choose the best answer.

I think you should buy _____  pack of mineral water instead. And you can also buy _____  snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______  cookies and soft candies.

Choose the best answer.

We should decorate our living room with _____ orange banner. We also need ________  ribbons, balloons, party hats and costume.

Choose the best answer.

I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.